I watched a few of their vids where they put a few weapons' dicks in the dirt. Cheap AR, expensive AR, cheap AK, expensive AK. The cheap guns puked at 200-400 rounds, the expensive guns went around 800+.

In direct comparison, the G17 really shined. The polymer guide rod was predicted to puke first, and it did around 600 rounds. Throwing in a steel guide rod it went over 1200 rounds. That's more abuse than anybody could put on a regular semiauto Glock.